US2410235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for heat-treating calcareous materials
Assignee: Individual
•
Filing: 1943-06-23
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Granted: 1946-10-29
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Expires: 1963-06-23
Abstract
No abstract record available.
Inventors
- 👤 Warford A Reaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:16
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/02; F27B7/04; F27B7/20; F27B7/2016; F27B2007/046; F27B7/32; F27B2007/3282; F27B2007/3288; F27D; F27D3/00; F27D2003/0034; F27D2003/0071
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-10-28 | 1950-04-29 | 1950-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-28 | 1954-04-29 | 1954-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-28 | 1958-04-29 | 1958-10-29 | $7700.00 | Window Closed / Lapsed |